Zip - A compression format used to make files smaller, often before sending them over the internet. A decompression program such as pkunzip is needed to make these files usable after downloading.

Zone - A zone is a trust boundary, a communication boundary, and an operational boundary. The zone may map to a real-world entity, such as a company or department, or it may define a particular area within the physical deployment environment of the application, such as a Web farm or even just a process. Zones are useful mental models when determining application deployment and the relationship of application design to the infrastructure design.